21389136

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{499}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 59520000

約数和(自身を除く): 38130864

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 47, 48, 57, 76, 94, 114, 141, 152, 188, 228, 282, 304, 376, 456, 499, 564, 752, 893, 912, 998, 1128, 1497, 1786, 1996, 2256, 2679, 2994, 3572, 3992, 5358, 5988, 7144, 7984, 9481, 10716, 11976, 14288, 18962, 21432, 23453, 23952, 28443, 37924, 42864, 46906, 56886, 70359, 75848, 93812, 113772, 140718, 151696, 187624, 227544, 281436, 375248, 445607, 455088, 562872, 891214, 1125744, 1336821, 1782428, 2673642, 3564856, 5347284, 7129712, 10694568, 21389136]

約数ペア:

[(1, 21389136), (2, 10694568), (3, 7129712), (4, 5347284), (6, 3564856), (8, 2673642), (12, 1782428), (16, 1336821), (19, 1125744), (24, 891214), (38, 562872), (47, 455088), (48, 445607), (57, 375248), (76, 281436), (94, 227544), (114, 187624), (141, 151696), (152, 140718), (188, 113772), (228, 93812), (282, 75848), (304, 70359), (376, 56886), (456, 46906), (499, 42864), (564, 37924), (752, 28443), (893, 23952), (912, 23453), (998, 21432), (1128, 18962), (1497, 14288), (1786, 11976), (1996, 10716), (2256, 9481), (2679, 7984), (2994, 7144), (3572, 5988), (3992, 5358)]